<template>
  <div>
    <div style="margin: 10px 0">
      <el-input style="width: 200px" placeholder="请输入文件名称" suffix-icon="el-icon-search"
                v-model="name" @keyup.enter.native="load"></el-input>
      <el-button class="ml-5" type="primary" @click="load">搜索</el-button>
      <el-button class="ml-5" type="warning" @click="reset">重置</el-button>
    </div>

    <div style="margin: 10px 0">
      <el-upload
          :action="'http://' + serverIp + ':9090/file/upload'"
          :show-file-list="false"
          :on-success="handleFileUploadSuccess"
          :on-error="handleFileUploadError"
          style="display: inline-block">
        <el-button type="primary" class="ml-5">上传文件 <i class="el-icon-top"></i></el-button>
      </el-upload>
      <el-popconfirm
          class="ml-5"
          confirm-button-text='确定'
          cancel-button-text='我再想想'
          icon="el-icon-info"
          icon-color="red"
          title="确定要批量删除吗？"
          @confirm="delBatch"
      >
        <el-button type="danger" slot="reference">批量删除 <i class="el-icon-remove-outline"></i></el-button>
      </el-popconfirm>
    </div>

    <el-table
        :data="tableData"
        border
        stripe
        :header-cell-class-name="headerBg"
        @selection-change="handleSelectChange">
      <el-table-column type="selection" width="55"></el-table-column>
      <el-table-column prop="id" label="ID" width="80"></el-table-column>
      <el-table-column prop="name" label="文件名称"></el-table-column>
      <el-table-column prop="type" label="文件类型"></el-table-column>
      <el-table-column prop="size" label="文件大小(kb)"></el-table-column>
      <el-table-column label="预览">
        <template slot-scope="scope">
          <el-button type="primary" @click="preview(scope.row.url)">预览</el-button>
        </template>
      </el-table-column>
      <el-table-column label="下载">
        <template slot-scope="scope">
          <el-button type="primary" @click="download(scope.row.url)">下载  <i class="el-icon-bottom"></i></el-button>
        </template>
      </el-table-column>
      <el-table-column prop="enable" label="启用">
        <template slot-scope="scope">
          <el-switch
              @change="changeEnable(scope.row)"
              v-model="scope.row.enable"
              active-color="#13ce66"
              inactive-color="#ccc"></el-switch>
        </template>
      </el-table-column>
      <el-table-column label="操作" width="200" align="center">
        <template slot-scope="scope">
          <el-popconfirm
              class="ml-5"
              confirm-button-text='确定'
              cancel-button-text='我再想想'
              icon="el-icon-info"
              icon-color="red"
              title="确定要删除吗？"
              @confirm="handleDelete(scope.row.id)"
          >
            <el-button type="danger" slot="reference">删除 <i class="el-icon-remove-outline"></i></el-button>
          </el-popconfirm>
        </template>
      </el-table-column>
    </el-table>
    <div style="padding: 10px 0">
      <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="pageNum"
          :page-sizes="[2, 5, 10, 20]"
          :page-size="pageSize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total">
      </el-pagination>
    </div>
  </div>

</template>

<script>
import {serverIp} from "../../public/config";

export default {
  name: "File",
  data() {
    return {
      serverIp: serverIp,
      tableData: [],
      name: '',
      multipleSelection: [],
      pageNum: 1,
      pageSize: 10,
      total: 0,
      headerBg: 'headerBg',
    }
  },
  created() {
    this.load();
  },
  methods: {
    preview(url) {
      window.open('https://file.keking.cn/onlinePreview?url=' + encodeURIComponent(window.btoa((url))));
    },
    changeEnable(row) {
      this.request.post("/file/update", row).then(res => {
        if (res.code === "200") {
          this.$message.success("操作成功");
        } else {
          this.$message.error("操作失败");
        }
      })
    },
    download(url) {
      window.open(url);
    },
    handleFileUploadSuccess(res) {
      this.$message.success("文件上传成功");
      this.load();
    },
    handleFileUploadError(res) {
      this.$message.error("文件上传失败");
      this.load();
    },
    delBatch() {
      let ids = this.multipleSelection.map(v => v.id);  //把一个对象数组变成一个id数组
      this.request.post("/file/del/batch", ids).then(res => {
        if (res.code === "200") {
          this.$message.success("批量删除成功");
        } else {
          this.$message.error("批量删除失败");
        }
        this.load();
      })
    },
    handleSelectChange(val) {
      console.log(val);
      this.multipleSelection = val;
    },
    handleDelete(id) {
      this.request.delete("/file/" + id).then(res => {
        if (res.code === "200") {
          this.$message.success("删除成功");
        } else {
          this.$message.error("删除失败");
        }
        this.load();
      })
    },
    reset() {  //清空搜索框
      this.name = "";
      this.load();
    },
    load() {
      this.request.get("/file/page", {
        params: {
          pageNum: this.pageNum,
          pageSize: this.pageSize,
          name: this.name,
        }
      }).then(res => {
        this.tableData = res.data.records;
        this.total = res.data.total;
      })
    },
    handleSizeChange(pageSize) {
      console.log(pageSize);
      this.pageSize = pageSize;
      this.load();
    },
    handleCurrentChange(pageNum) {
      console.log(pageNum);
      this.pageNum = pageNum;
      this.load();
    }
  }
}
</script>

<style>
.headerBg {
  background: #eee !important;
}
</style>